Golf club with which gravity rule is realized

ABSTRACT

In order to stabilize golf swing motion of a player, downswing motion that is the most important but difficult part in golf swing is streamlined. A moving object is set in a golf club. When the club is in a vertical position in a flow of its movement from the top of the swing to downswing, the moving object starts to fall by the player&#39;s kinetic energy and gravity. The player swings down the club while confirming the fall of the moving object and matching his/her motion to the vector of the object in a direction of the fall. This enables the player to perform an efficient downswing were the club is swung in a shortcut path. A more realistic club swing can be made when it is performed on a address mat where a stance and a distance of a ball are indicated. This can be achieved by a removable handle end portion.

FIELD OF TECHNOLOGY

The present invention relates to a golf club which, in a golf swing comprising forced motion, enables the secure performance of a down swing, which is the most important to projecting a golf ball toward the target objective of the golf swing.

BACKGROUND TECHNOLOGY

The golf swing is a series of movements, commencing with the back swing and continuing to the down swing.

In this movement, a part of kinetic energy provided by the golfer and a part of potential energy obtained from the field of gravity when the arms and the club fall are transferred to the ball by swinging, according to the additive rule of force.

Because the energy transferred to the ball by the club head upon impact is determined by the physical properties of the club head and ball and the laws of physics, adequate control is difficult. Therefore, a technology which maximizes swing efficiency is desired.

As a measure for this, it is necessary to achieve the efficiency of the down swing, which is the most complex and difficult to understand among golf swings.

The conventional method is an ambiguous method, in which the down swing is performed by turning around at the top of the swing, and being conscious of the weight of the head of the golf club itself.

DISCLOSURE OF INVENTION Problems Overcome by the Invention

In the convention method of being conscious of the head weight, because the timing of raising and lowering the club from the back swing to the down swing and the feeling of the club head weight relies upon an individual's sense, the down swing tends to have a large scatter, lacking stability.

Therefore, it is an objective of the invention of the present application to remove such conventional shortcomings.

Problem Resolution Means

The present invention enables an abbreviated down swing by providing a gravity sensing bar, comprising a moving object embedded in a golf club, where the gravity seining bar starts to fall by the force of gravity and by the golfer's kinetic energy from when the shaft is erected almost vertically, in which swinging is accomplished while being conscious of dropping both arms in front of the chest, in alignment with the direction of fall vector, and lowering the club shaft vertically.

The gravity sensing bar described in claim 1 is adjusted for the swing of each golfer and the length, weight, raw material of the golf club used, and is inserted into the shaft, in which a stopper for receiving the gravity sensing bar is fixed close to the head within the shaft, and the gravity sensing bar is located at the stopper unit at the time of addressing, and the bar falls vertically by the force of gravity when the shaft is standing in the series extending from the back swing to the down swing, swinging being performed in alignment with the vector in the direction of fall.

The bar with the sensor described in claim 2 is positioned on the head side of the golf club from the back swing to the top of the swing, and moves to the handle side at the start of the down swing, and back to the head side of the club again after turning around.

The moving time of the bar is measured with a sensor, taken from the housing into a programmable controller and image processed with a computer, thereby achieving an efficient down swing while watching the display.

The ferromagnetic moving object described in claim 3 is provided in the shape of a bar or ball, the bar being adjusted in terms of its length and weight, and the ball being adjusted in terms of its diameter, weight, and number, and being inserted into the shaft of the golf club.

The moving object is attached to a stopper having magnetism on the head side at the time of addressing, when the shaft is standing, while turning around from the back swing to the down swing, and the moving object is adjusted of its own weight so that it starts falling by the golfer's kinetic energy and the force of gravity, and by swinging in alignment with the vector in the direction of fall, and an abbreviated, efficient down swing around the body can be performed, lowering the club shaft vertically.

One of the moving objects and the stopper contains a magnetic element, and the other a magnet-attachable element, or the construction may be reversed.

The golf club described in claim 4 is a golf club in which a moving object having magnetism and a stopper having magnetism fixed near the head are placed within a carbon shaft (non-magnetizing shaft) with the same poles facing each other in a shaft generating magnetic repulsion to promote the movement of a moving object, which falls from the head side to the handle side when turning around from the back swing to the down swing, enabling the accomplishment of an efficient down swing in alignment with the vector in the direction of fall.

The golf club described in claim 5 is a golf club where a moving object is located within the handle at the time of addressing, and the moving object is projected from the handle end by the golfer's kinetic energy and the force of gravity when the shaft is standing in a series of motions from the back swing to the down swing, and by performing a down swing directing the projection toward the golf ball, and an abbreviated, efficient down swing can be performed, lowering the club vertically.

In a golf club where the moving object consists of a composite body, its projection length is set to about 10 cm, and it is attached to the handle end section with its weight and balance being adjusted.

The golf club described in claim 6 has a detachable handle end, the handle end section of which is provided with a screw having a groove on top so that it can be easily removed with a coin, etc., formed so that the moving object can be easily replaced. The projecting means of the moving object from the handle end section described in claim 5 can also be detached from the handle end section.

As an embodiment of the present invention, because swinging while conscious of the swing plane of each golf club is possible by standing on a mat on which desirable relative positions of the feet and ball are printed according to the height and the length of the golf club, addressing with the feet positions being adjusted, and swinging while checking the ball position, practice can be effectively performed.

The present invention can be made compatible for all kinds of golf clubs, and can be comfortably used, not only with full-size clubs used for normal play, but also short clubs for various kinds of practice. Especially, by inserting a moving object into a practice swing using a shortened club, if swung while being conscious of the motion of the moving object at the down swing, a strong, full swing can be performed, even if the weight of the head section is small.

Therefore, in comparison with clubs in which no moving object is contained, the difference in swinging feel can be recognized. Especially, a swing with substantial feel can be performed by checking (being conscious of) the fall of the moving object and swinging fully so as to send the moving object toward the head side while turning around from the top of the swing to the down swing.

Swing practice with full-swing feel using the shortened golf club is most suitable for practice in which one is conscious of the pressure on the grip coming from maintaining the grip strength constant in order to prevent excess force from being applied to the grip in a series of swings, because the shaft is short and the club is light-weight overall.

Possibility of Industrial Applications

Because the golf club of the present invention converts the down swing, which is the most important, complex, and difficult to understand among golf swings from the conventional ambiguous method having a conscious awareness of the head weight, into a method where a moving object is dropped from the head side by the golfer's kinetic energy and gravity and the club is vertically lowered in alignment with the vector in the direction of fall, in order to easily enable an abbreviated, efficient swing, it leads to the basic construction of a golf swing, which can then lead to an expansion of the entire golf industry.

BRIEF EXPLANATION OF DRAWINGS

FIG. 1 is a golf club containing a gravity sensing bar described in claim 1.

FIG. 2 is a conceptual drawing where data are taken into a programmable controller from the golf club described in claim 2 containing a bar with a sensor and a housing for data output, accumulated in a data storage terminal, sent to a computer via a wireless LAN, and detected.

Shown in FIG. 3 is the golf club described in claim 3, where shown in (A) is a club with a magnetic stopper and a ferromagnetic moving bar. Shown in (B) is a club with a ferromagnetic stopper and a magnetic moving bar. Shown in (C) is a drawing where the moving object is a ball.

FIG. 4 is a drawing of the golf club described in claim 4 where a stopper and a moving object are magnetic and installed with the same poles facing with each other.

FIG. 5 is a drawing where a moving object is projected from the handle end described in claim 5.

FIG. 6 is a drawing of a detachable handle where the handle end section described in claim 6 opens/closes the shaft end section opening.

EXPLANATION OF CODES

-   a Stopper -   a′ Magnetic stopper -   a″ Ferromagnetic stopper -   b Gravity-sensing bar -   b′ Magnetic bar -   b″ Ferromagnetic bar -   c Ball -   A Housing -   B Bar with a sensor -   1 Shaft -   2 Handle -   3 Stopper -   4 Bar -   5 Guide pipe -   6 Weight -   7 Groove for detaching -   8 Detaching screw cap -   9 Handle 

1. A golf club enabling a down swing which allows the golfer to actually feel the gravity by embedding a gravity-sensing bar inside the shaft of a golf club so that it can move, fixing a stopper near the head, and allowing the golfer to become conscious of the feeling that the bar is falling vertically by gravity when the shaft is standing in a series of actions from the back swing to the down swing.
 2. The golf club according to claim 1, wherein the bar is provided with a sensor.
 3. A golf club characterized by the fact that a moving object and a stopper are inserted into the shaft of a golf club, one of them comprising a magnet, the other comprising a ferromagnetic body, with a stopper being fixed near the head, and in which the moving object is in contact with the stopper section from the back swing to the top of swing, in which it leaves the stopper section at the start of the down swing by the golfer's kinetic energy and the force of gravity, and falls to the handle side.
 4. A golf club characterized by the fact that the golf club is constructed so that a moving object having magnetism and a stopper having magnetism fixed near the head are placed with the same poles facing each other inside the shaft, the fall of the moving object by kinetic energy and gravity at the down swing can be further promoted by magnetic repulsion between the same poles.
 5. A golf club characterized by the fact that a moving object is freely and projectably attached at the handle end section of a golf club, and the moving object is projected from the handle end by the golfer's kinetic energy and gravity at the start of a down swing.
 6. A golf club according to claim 1, wherein the handle end section is detachable, opening and closing the shaft end opening. 